* guix/derivations.scm (derivation->output-path,
derivation->output-paths): New procedures.
(derivation-path->output-path): Use 'derivation->output-path'.
(derivation-path->output-paths): Use 'derivation->output-paths'.
(derivation): Accept 'derivation?' objects as inputs. Return a single
value.
(build-derivations): New procedure.
(compiled-modules): Use 'derivation->output-paths'.
(build-expression->derivation)[source-path]: Add case for when the
input matches 'derivation?'.
[prologue]: Accept 'derivation?' objects in INPUTS.
[mod-dir, go-dir]: Use 'derivation->output-path'.
* guix/download.scm (url-fetch): Adjust to the single-value return.
* guix/packages.scm (package-output): Use 'derivation->output-path'.
* guix/scripts/build.scm (guix-build): When the argument is
'derivation-path?', pass it through 'read-derivation'.
Use 'derivation-file-name' to print out the .drv file names, and to
register them. Use 'derivation->output-path' instead of
'derivation-path->output-path'.
* guix/scripts/package.scm (roll-back): Adjust to the single-value
return.
(guix-package): Use 'derivation->output-path'.
* guix/ui.scm (show-what-to-build): Adjust to deal with 'derivation?'
objects instead of .drv file names.
* gnu/system/grub.scm (grub-configuration-file): Use
'derivation->output-path' instead of 'derivation-path->output-path'.
* gnu/system/vm.scm (qemu-image, system-qemu-image): Likewise.
* tests/builders.scm, tests/derivations.scm, tests/packages.scm,
tests/store.scm, tests/union.scm: Adjust to the new calling
convention.
* doc/guix.texi (Defining Packages, The Store, Derivations): Adjust
accordingly.
Fixes <http://bugs.gnu.org/15182>.
Reported by Mark H Weaver <mhw@netris.org>.
* guix/download.scm (%mirrors)[kernel.org]: Add ftp.be.debian.org and
mirror.linux.org.au.
* guix/build/download.scm: Autoload (gnutls).
(tls-wrap): New procedure.
(open-connection-for-uri): Add support for `https'. Wrap the socket
with `tls-wrap' in that case.
(url-fetch): Add `https'.
* guix/download.scm (gnutls-derivation): New procedure.
(url-fetch)[need-gnutls?]: New variable.
Call `gnutls-derivation' when NEED-GNUTLS? is true, and add its output
to the `GUILE_LOAD_PATH' env. var. in that case.
* guix-download.in (http-fetch, ftp-fetch): Remove.
(fetch-and-store): Replace `uri' parameter with `name', for the output
file name. Redirect the output of `fetch' to the error port.
(guix-download): Call `url-fetch' for all URI schemes except `file'.
Handle PATH equal to #f.
* guix/download.scm: Export `%mirrors'.
* tests/guix-download.sh: Change erroneous URL, because URLs at
example.com are all valid redirections.
* guix/download.scm (%mirrors): New variable. Mirror lists taken from
Nixpkgs.
(url-fetch): New `mirrors' keyword parameter.
[builder]: Pass it.
* guix/build/download.scm (url-fetch): New `mirrors' keyword parameter.
[maybe-expand-mirrors]: New procedure.
[uri]: Use it.
David Thompson